| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 827 |
15.2%
|
|
| 2004 | 1107 |
20.3%
|
|
| 2005 | 1049 |
19.3%
|
|
| 2006 | 1208 |
22.2%
|
|
| 2007 | 1087 |
20%
|
|
| 2008 | 168 |
3.1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 27179 |